Can decaying particle explain cosmic infrared background excess?
Recently the CIBER experiment measured the diffuse cosmic infrared background (CIB) flux and claimed an excess compared with integrated emission from galaxies. We show that the CIB spectrum can be fitted by the additional photons produced by the decay of a new particle. However, it also contributes...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-09-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269317305828 |
| _version_ | 1818020646144180224 |
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| author | Kazunori Kohri Takeo Moroi Kazunori Nakayama |
| author_facet | Kazunori Kohri Takeo Moroi Kazunori Nakayama |
| author_sort | Kazunori Kohri |
| collection | DOAJ |
| description | Recently the CIBER experiment measured the diffuse cosmic infrared background (CIB) flux and claimed an excess compared with integrated emission from galaxies. We show that the CIB spectrum can be fitted by the additional photons produced by the decay of a new particle. However, it also contributes too much to the anisotropy of the CIB, which is in contradiction with the anisotropy measurements by the CIBER and Hubble Space Telescope. |
| first_indexed | 2024-04-14T08:08:06Z |
| format | Article |
| id | doaj.art-6b17d81d4797454491ef80ae954fba67 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 1873-2445 |
| language | English |
| last_indexed | 2024-04-14T08:08:06Z |
| publishDate | 2017-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-6b17d81d4797454491ef80ae954fba672022-12-22T02:04:39ZengElsevierPhysics Letters B0370-26931873-24452017-09-01772C62863310.1016/j.physletb.2017.07.026Can decaying particle explain cosmic infrared background excess?Kazunori Kohri0Takeo Moroi1Kazunori Nakayama2Institute of Particle and Nuclear Studies, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, JapanDepartment of Physics, Faculty of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, JapanDepartment of Physics, Faculty of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, JapanRecently the CIBER experiment measured the diffuse cosmic infrared background (CIB) flux and claimed an excess compared with integrated emission from galaxies. We show that the CIB spectrum can be fitted by the additional photons produced by the decay of a new particle. However, it also contributes too much to the anisotropy of the CIB, which is in contradiction with the anisotropy measurements by the CIBER and Hubble Space Telescope.http://www.sciencedirect.com/science/article/pii/S0370269317305828 |
| spellingShingle | Kazunori Kohri Takeo Moroi Kazunori Nakayama Can decaying particle explain cosmic infrared background excess? Physics Letters B |
| title | Can decaying particle explain cosmic infrared background excess? |
| title_full | Can decaying particle explain cosmic infrared background excess? |
| title_fullStr | Can decaying particle explain cosmic infrared background excess? |
| title_full_unstemmed | Can decaying particle explain cosmic infrared background excess? |
| title_short | Can decaying particle explain cosmic infrared background excess? |
| title_sort | can decaying particle explain cosmic infrared background excess |
| url | http://www.sciencedirect.com/science/article/pii/S0370269317305828 |
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